问题详情:
He has been the computer for two hours, chatting with a boy from Australia.
A. in B. on C. at D. by
【回答】
C
知识点:介词
题型:选择题
问题详情:
He has been the computer for two hours, chatting with a boy from Australia.
A. in B. on C. at D. by
【回答】
C
知识点:介词
题型:选择题